Shuttle



Sept. 9, 1924. 1,507,978

I, SNOW SHUTTLE F1106 Abril 14 1922 Fatenteol Sept. 9, 1924.

UNITED STATES ISAAC snow, 0E LAWRENCE, 1VIASSACHUSETTS.

- SHUTTLE.

Application filed April 14, 1922. Serial No.'552,'685.

To all whom it may concern:

Be it known that I, ISAAC SNow, a citizen of. the United States, residing at Lawrence, in the county of Essex andState of Massachusetts, have invented certain new and useful Improvements inshuttles, of which the following is a specification.

My invention relates to improvements in shuttles of the self-threading type such as are used in weft replenishing looms.

I am familiar with patents issued to myself, No. 154:4,734, June 29, 1920; No. 1.369306, F ebruaryf 22, 1921; and No. 1.3T5,18'7,;-kpril 19, 1921, and with the well known Draper type of self-threading shuttles, but these are-suitable for what may now be called in the trade the normal or left eye and the normal wind of yarn on the bobbin.

This invention is an improvement the pur-' pose of which is to provide self-threading devices for use in a shuttle with a left eye andreverse wind, or a right eye and normal wind. I

For convenience andfor the purpose of identification in this specification, I will call the front that end of the shuttle where the eye is located, and the other end of the shuttle the back.

I will call an eye which passes out of the left side when looking at the front point a left eye, and an eye on the opposite side right eye?.

1 will call the top of the shuttle as it runs in a loom the top side, and the bottom i the bottom side.

."hands of a clock and which, unwinds in the reverse direction or contra-clockwise.

In all the figures of the drawings I show a-shuttle with a lefteye? and a bObblfl.

with a reverse wind. I

In the drawings, Fig. 1 IS a plan view of the front end of a shuttle with a metal threading block in which the preferred form of my device is embodied.

Fig. 2 is an elevation from the left of Fig. 1.

Fig. 3 1s a view similar to Fig. 2 .ofa threading block including my device, the- I i of tip 38 forms at the back a stop hook shuttle being indicated by dotted lines.

Fig. 41 is a view of the threading blockremoved from the shuttle viewed from the opposite side from Fig. 3, i. e .-.as from the I right of Fig. 1, with part broken away.

'Fig. 5 is-a-sectional View on line 5-5 of Fig. 1 from the direction of the arrow.

Fig. 6 is a .view. from the front of my and with the guide hook out off.

0 threading block removed from the shuttle Fig. 7-isaview similar to Fig. 6 showing a I slight modification.

S is a shuttle having the usual bobbin chamber 10'for the bobbin B on which the yarn A is wound with a reverse wind as shown in Fig. 1. 12 isthe threadingchamher which extends forward in continuation of bobbin chamber 10,"and'13 is the delivery passage which extends still further forward from the threading chamber. H represents the shuttle eye in the wood and this connects with the threading chamber 12 and de-v livery passage 13 through the cut away part 14. The usual bearing pins 17, 17 are shown. 1

I, show my. invention embodied .in what I will call a threading block G which may be cut: and sawed out of a single casting or may have. its various parts welded or otherwise'attached together as is most convenient.

ingv chamber 12is cutaway to receive threadin the wood. of the shuttle anda hole for I ,The. wood of the shuttle about the threadthe retaining'bolt or screw '36, both in a well known manner. The woodalso encloses a part of [the threading chamber 87, as

shown in Fig. 5, which is a partof the threading chamber 12 in -the wood;

This threading block C is made up of a nose block G and a thread directing guide plate F which is shown as integral therewith. but these might be separate pieces united at the dotted line X shown in Fig. 5.

Nose block G is fixed in the threading chamber on the eye side, being part'of block C. held in place'by screw 36. Ithas a nose 37 which curves over and toward the right, extending forwar'd of the eye H and termifinating in a tip 38 which curves back to the right. The top ofthis nose 37 and of tip 38 slopes down-to the right to facilitate the yarn. A getting into its proper position on 1 the first pick in threading, and 'theback 39 which prevents loops" of. yarn from unthreading if thrown forward.

site side from the eye H by being part of.

threading block C held in place by bolt 36, This slopes from the top side of the shuttle down into the threading chamber in the same direction and proximate the normal unwinding path of the yarn as it unwinds on the first pick of the shuttle in amagazine loom. 23 represents an extreme forward portion from which it slopes down and back to a point 25 and thence along under the nose 37 and 38 of the nose block G to the back part 24: of guide plate F where it is extended to form a thread retaining guide hook from and under theback part thereof. Preferably, the back part 28 and the front part 29' of this hook 524 slope around toward each other so that the yarn cannot catch thereon.

Preferably, directly behind this hook is a recess 84 which holds friction 85 in a position to overlap the bottom part of hook guide, 24 thereby serving as a friction and also as a lock. 1

The guide hook such as 24 may be more or less involute, as shown in my Patent No. 1,375,187 mentioned above or as shown in Figs. 5 and 6 of the drawing, or it may be merely a hook or finger with a very slight curve, as shown in Fig. 7 at 124. It may pass to the left beyond the vertical guide pin 33 to a point nearer the-eye H than such guide pin, and thence back towards the other side as shown in Figs. 5 and 6, or it may not'extend over to the guide pin as shown in- Fig; 7.

I claim:

1'. The combination in ashuttle for reverse wound bobbins having an eye on one side, a bobbin chamber,--a threading chamber in continuation thereof which connects with the eye,- and a delivery passage extending forward from the threading chamber; of a nose block fixed in the threading chamber on the eye side having a nose which extends forward of the eye and slopes down into the threading chamber, a thread guide horn extending down and back below the nose, and a vertical thread guide pin behind said horn; with a thread directing guide plate so fixed in the threading chamber on'the opposite side from the eye as to slope down thereinto, in thedirection of the unwinding yarn under the nose of the nose block, and a thread retaining guide hook which extends from and under the back part of the thread directing guide plate proximate the bobbin chamber in the direction of the unwinding yarn to a point nearer the eye than the vertical guide pin,

ber; of a nose block fixed in the threading chamber on the eye side having a nose which extends forward of the eye and slopes down into the threading chamber, a

thread guide horn extending down and.

back below the nose, and a vertical thread guide pin behind said horn; with a thread directing guide plate so fixed in the thread ing chamber on the opposite side from the eye as to slope down thereinto in the direction of the unwinding yarn under the nose of the nose block, and a thread retaining guide hook which extends from and under the back part of the thread directing guide plate proximate the bobbin chamber in the direction of' the unwinding yarn in such position as to overlap a part of the shuttle.

3. The combination in a, shuttle for reverse wound bobbins havingan eye on one side, a bobbin chamber, a threading chamber in continuationthereof which connects with the eye, and a delivery passage extending forward from the threading chamber; of i a nose block fixedin the threading chamber on the eye'side having a nose which extends forward of the eye and slopes downinto the threading chamber, a thread guide horn extending down and back below the nose, and a vertical thread guide pine behind said horn; with a thread directing guide plate so fixed in the threading chamber on the opposite side from the eye as to slope down thereinto in the direction of the unwinding yarn under the nose of the nose block, and a thread retaining guide hook which extends from and under the-back part of the thread directing guide plate proximate the bobbin chamber in the direction of the lin winding yarn.

4-. The combination in a shuttle'having an eye, a bobbin chamber and a threading chamber in continuation thereof which connects with the eye; of a guide plate so fixed to the side of the threading chamber ops posite the eye as to extend slopingly down into the threading chamber, and a hook guide in extension thereof on the back end proximate the bobbin chamber; with anose block on the side of the threading chamber next the guide eye which has a nose extending forward of the guide eye and over the guide plate and a vertical thread pin so positioned that it is axially inside said guide hook.

5. The combination in a shuttle having an eye, a bobbin chamber and a threading chamber in continuation thereof which connects With the eye; of a. guide plate so fixed to the side of the threading chamber opposite the eye as to extend slopingly down into the threading chamber and a hook guide in extension thereof; With a nose block on the side of the threading chamber next the guide eye which has a nose ex tending forward of the guide eye and over the guide plate and a vertical thread pin.

6. The combination in a shuttle having an eye, a bobbin chamber and a threading chamber in continuation thereof Which con nects With the eye; of a guide plate so fixed to the side of the threading chamber 0pposite the eye as to extend slopingly down into the threading chamber and a hook guide in extension thereof; With-a nose block on the side of the threading chamber nextthe guide eye which has a nose extending forward of the guide eye thence down and back towards and over the guide plate and having at the back a stop hook and a vertical thread pin.

ISAAC SNOW. 

